Nederlandse norm NEN-EN (en) Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements

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1 Dit document mag slechts op een stand-alone PC worden geinstalleerd. Gebruik op een netwerk is alleen. toestaan als een aanvullende licentieovereenkomst voor netwerkgebruik met NEN is afgesloten. This document may only be used on a stand-alone PC. Use in a network is only permitted when a supplementary license agreement for us in a network with NEN has been concluded. Nederlandse norm NEN-EN (en) Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements Vervangt NEN-EN :1999 Ontw. ICS ; november 2007

2 NEN-EN Als Nederlandse norm is aanvaard: - EN :2007,IDT Normcommissie "Stalen buizen" Apart from exceptions provided by the law, nothing from this publication may be duplicated and/or published by means of photocopy, microfilm, storage in computer files or otherwise, which also applies to full or partial processing, without the written consent of the Netherlands Standardization Institute. The Netherlands Standardization Institute shall, with the exclusion of any other beneficiary, collect payments owed by third parties for duplication and/or act in and out of law, where this authority is not transferred or falls by right to the Reproduction Rights Foundation. Auteursrecht voorbehouden. Behoudens uitzondering door de wet gesteld mag zonder schriftelijke toestemming van het Nederlands Normalisatie-instituut niets uit deze uitgave worden verveelvoudigd en/of openbaar gemaakt door middel van fotokopie, microfilm, opslag in computerbestanden of anderszins, hetgeen ook van toepassing is op gehele of gedeeltelijke bewerking. Het Nederlands Normalisatie-instituut is met uitsluiting van ieder ander gerechtigd de door derden verschuldigde vergoedingen voor verveelvoudiging te innen en/of daartoe in en buiten rechte op te treden, voor zover deze bevoegdheid niet is overgedragen c.q. rechtens toekomt aan de Stichting Reprorecht. Although the utmost care has been taken with this publication, errors and omissions cannot be entirely excluded. The Netherlands Standardization Institute and/or the members of the committees therefore accept no liability, not even for direct or indirect damage, occurring due to or in relation with the application of publications issued by the Netherlands Standardization Institute. Hoewel bij deze uitgave de uiterste zorg is nagestreefd, kunnen fouten en onvolledigheden niet geheel worden uitgesloten. Het Nederlands Normalisatie-instituut en/of de leden van de commissies aanvaarden derhalve geen enkele aansprakelijkheid, ook niet voor directe of indirecte schade, ontstaan door of verband houdend met toepassing van door het Nederlands Normalisatie-instituut gepubliceerde uitgaven Nederlands Normalisatie-instituut Postbus 5059, 2600 GB Delft Telefoon (015) , Fax (015)

3 NEN-EN Nederlands voorwoord Voor de in deze norm vermelde normatieve verwijzingen bestaan in Nederland de volgende equivalenten: vermelde norm Nederlandse norm titel EN NEN-EN Het kwalificeren van lassers - Smeltlassen - Deel 1: Staal (en,nl) EN 910 NEN-EN 910 Destructieve beproevingen van lasverbindingen in metalen - Buigproeven (en) EN 1418 NEN-EN 1418 Laspersoneel - Het kwalificeren van bedieners van lasmachines voor smeltlassen en instellers van weerstandlasapparatuur voor geheel mechanisch en automatisch lassen van metallische materialen (en,nl) EN NEN-EN Metalen - Trekproef - Deel 1: Beproevingsmethode bij omgevingstemperatuur (en) EN NEN-EN Metalen - Trekproef - Deel 5: Beproevingsmethode bij verhoogde temperatuur (en,nl) EN 10020:2000 NEN-EN 10020:2000 Definitie en indeling van staalsoorten (en,nl) EN 10021:2006 NEN-EN 10021:2007 Algemene technische leveringsvoorwaarden voor staalproducten (en,nl) EN NEN-EN Systemen voor het aanduiden van staalsoorten - Deel 1: Aanduiding met symbolen (en,nl) EN NEN-EN Systemen voor het aanduiden van staalsoorten - Deel 2: Numeriek systeem (en,nl) EN NEN-EN Platte producten gemaakt van staal voor drukvaten - Deel 2: Ongelegeerde en gelegeerde staalsoorten met gespecificeerde eigenschappen bij hoge temperatuur (en,nl) EN NEN-EN Platte producten gemaakt van staal voor drukvaten - Deel 3: Lasbaar, fijnkorrelig staal, normaal gegloeid (en) EN NEN-EN Platte producten van staal voor drukvaten - Deel 4: Nikkelgelegeerde staalsoorten met gespecificeerde eigenschappen bij lage temperatuur (en,nl) EN NEN-EN Metalen - Kerfslagproef volgens Charpy - Deel 1: Beproevingsmethode (en,nl) EN 10052:1993 NEN-EN 10052:1994 Termen en definities van de warmtebehandeling van ijzer- en staalprodukten (en,nl) EN NEN-EN Producten van staal - Keuringsdocumenten - Lijst van informatie en omschrijving (en,nl) EN NEN-EN Producten van metaal - Soorten keuringsdocumenten (en,nl) EN NEN-EN Gelaste stalen buizen voor toepassingen onder druk - Technische leveringsvoorwaarden - Deel 1: Buizen van ongelegeerd staal met eigenschappen gespecificeerd bij omgevingstemperatuur (en) EN NEN-EN Gelaste stalen buizen voor toepassingen onder druk - Technische leveringsvoorwaarden - Deel 2: Elektrisch gelaste buizen van ongelegeerd en gelegeerd staal met eigenschappen gespecificeerd bij verhoogde temperatuur (en) EN NEN-EN Gelaste stalen buizen voor toepassingen onder druk - Technische leveringsvoorwaarden - Deel 3: Buizen van gelegeerd fijnkorrelig staal (en) EN NEN-EN Gelaste stalen buizen voor toepassingen onder druk - Technische leveringsvoorwaarden - Deel 4: Elektrisch gelaste buizen van ongelegeerd staal met eigenschappen gespecificeerd bij lage temperatuur (en)

4 NEN-EN EN NEN-EN Gelaste stalen buizen voor toepassingen onder druk - Technische leveringsvoorwaarden - Deel 5: Onderpoedergelaste buizen van ongelegeerd en gelegeerd staal met eigenschappen gespecificeerd bij verhoogde temperatuur (en) EN NEN-EN Gelaste stalen buizen voor toepassingen onder druk - Technische leveringsvoorwaarden - Deel 6: Onderpoedergelaste buizen van ongelegeerd staal met eigenschappen gespecificeerd bij lage temperatuur (en) EN NEN-EN Niet-destructief onderzoek van stalen buizen - Deel 10: Radiografisch onderzoek van de las van automatisch booggelaste stalen buizen voor het aantonen van onvolkomenheden (en) EN NEN-EN Niet-destructief onderzoek van stalen buizen - Deel 11: Penetrantonderzoek van naadloze en gelaste stalen buizen voor het aantonen van oppervlakteonvolkomenheden (en) EN NEN-EN Niet-destructief onderzoek van stalen buizen - Deel 12: Magnetisch onderzoek van naadloze en gelaste ferromagnetische stalen buizen voor het aantonen van oppervlakteonvolkomenheden (en) EN 10266:2003 NEN-EN 10266:2003 Stalen buizen, fittingen en holle profielen voor staalconstructies - Symbolen en definities van termen voor gebruik in productnormen (en) EN NEN-EN Warmgewalste lasbare staven van staal voor drukvaten met eigenschappen gespecificeerd bij de verhoogde temperatuur (en) EN :2002 NEN-EN :2002 Metalen industriële leidingsystemen - Deel 3: Ontwerp en berekening (en) EN ISO 377:1997 NEN-EN-ISO 377:1997 Staal en producten van staal - Ligging en voorbereiding van monsters en proefstaven voor mechanische beproeving (nl) EN ISO NEN-EN-ISO Staal - Conversie van rekwaarden - Deel 1: Koolstofstaal en laaggelegeerde staalsoorten (en) EN ISO NEN-EN-ISO Codes voor de weergave van landnamen en hun onderverdelingen - Deel 1: Landencodes (en,fr) EN ISO 6708 NEN-EN-ISO 6708 Pijpleidingcomponenten - Definitie en keuze van DN (nominale middellijn) (nl) EN ISO NEN-EN-ISO Staal en ijzer - Monstername en voorbereiding van monsters voor de bepaling van de chemische samenstelling (en) EN ISO NEN-EN-ISO Beschrijven en goedkeuren van lasmethoden voor metalen - Lasmethodebeproeving - Deel 1: Boogen autogeenlassen van staal en booglassen van nikkel en nikkellegeringen (en,nl) ISO

5 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN October 2007 ICS ; English Version Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements Raccords à souder bout à bout - Partie 2: Aciers non alliés et aciers ferritiques alliés avec contrôle spécifique Formstücke zum Einschweißen - Teil 2: Unlegierte und legierte ferritische Stähle mit besonderen Prüfanforderungen This European Standard was approved by CEN on 18 August CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN :2007: E

6 Contents Foreword Scope Normative references Terms and definitions Symbols Designations Designation of steel grades Designation of fittings Information to be supplied by the purchaser Mandatory information Options Examples of an order Resistance to internal pressure General Fittings of type A Fittings of type B Manufacturing process Steelmaking process Product making process for fittings and heat treatment Technical requirements General Chemical composition Mechanical properties Weldability Appearance and internal soundness Dimensions and tolerances Dimensions Dimensional tolerances End finishing Inspection Type of inspection Inspection documents Summary of inspection and testing Sampling

7 13.1 Frequency of tests Preparation of samples and test pieces Test methods Chemical analysis Tensile test on the base material Transverse tensile test on the weld Hardness test Weld bend test Impact testing Dimensional testing Visual inspection Non destructive testing Material identification Marking Marking to be applied Methods Protection and packaging...54 Annex A (informative) Determination of pressure factors and wall thickness...55 Annex B (informative) Pressure factor tables for Fittings of type A...79 Annex C (informative) Wall thickness tables for Fittings of type B...97 Annex D (informative) Recommended heat treatment temperatures Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC Bibliography

8 Foreword This document (EN :2007) has been prepared by Technical Committee ECISS/TC 29 Steel tubes and fittings for steel tubes, the secretariat of which is held by UNI/UNSIDER. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2008, and conflicting national standards shall be withdrawn at the latest by May This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive (97/23/EC). For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document. EN comprises a series of European Standards about Butt-welding pipe fittings, namely: Part 1 : Wrought carbon steel for general use and without specific inspection requirements Part 2 : Non alloy and ferritic alloy steels with specific inspection requirements Part 3 : Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements Part 4 : Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements In writing this European Standard the competent committee recognized that there are two broad types of products commonly used, and decided to reflect these in the standard by differentiating between two parts. EN describes fittings without formal reference to the pressure resistance, which are not intended to be used in applications covered by the Pressure Equipment Directive (97/23/EC). EN defines two types of fittings : Type A fittings have the same wall thickness at the welding ends and at the body of the fitting than a pipe having the same specified wall thickness. Their resistance to internal pressure is, in general, less than that of a straight pipe with the same dimensions. Type B fittings showing increased wall thickness at the body of the fitting are designed to resist the same internal pressure as a straight pipe with same dimensions. These two types of fittings are intended to be used in applications covered by the EU Directive 97/23/EC. According to this Directive and further interpretation guidelines (e.g. guideline 7/19), seamless fittings are considered as materials whereas welded fittings are considered as components. Therefore, in some areas of this European Standard, provisions for seamless and welded fittings are different. The selection of steel type and requirement level depend on many factors; the properties of the fluid to be conveyed, the service conditions, the design code and any statutory requirements should all be taken into consideration. Therefore this standard gives no detailed guidelines for the application of different parts. It is the ultimate responsibility of the user to select the appropriate part for the intended application. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 4

9 1 Scope This Part of EN specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of carbon and alloy steel which are intended for pressure purposes at room temperature, at low temperature or at elevated temperatures, and for the transmission and distribution of fluids and gases. It specifies: type of fittings ; type A : Butt-welding fittings with reduced pressure factor ; type B : Butt-welding fittings for use at full service pressure ; steel grades ; mechanical properties ; dimensions and tolerances ; requirements for inspection and testing ; inspection documents ; marking ; protection and packaging. NOTE In the case of a harmonised supporting standard for materials, presumption of conformity to the ESRs is limited to technical data of materials in the standard and does not presume adequacy of the material to a specific item of equipment. Consequently it is essential that the technical data stated in the material standard be assessed against the design requirements of this specific item of equipment to verify that the ESRs of the PED are satisfied. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 287-1, Qualification test of welders Fusion welding Part 1: Steels EN 910, Destructive tests on welds in metallic materials Bend tests EN 1418, Welding personnel Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN , Metallic materials Tensile testing Part 1: Method of test at ambient temperature EN , Metallic materials Tensile testing Part 5: Method of testing at elevated temperature EN 10020:2000, Definition and classification of grades of steel EN 10021:2006, General technical delivery conditions for steel products 5

10 EN , Designation systems for steels Part 1: Steel names EN , Designation systems for steels Part 2: Numerical system EN , Flat products made of steels for pressure purposes Part 2: Non-alloy and alloy steels with specified elevated temperature properties EN , Flat products made of steels for pressure purposes Part 3: Weldable fine grain steels, normalized EN , Flat products made of steels for pressure purposes Part 4: Nickel alloy steels with specified low temperature properties EN , Metallic materials - Charpy impact test Part 1: Test method EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10168, Steel products Inspection documents List of information and description EN 10204, Metallic products Types of inspection documents EN , Welded steel tubes for pressure purposes Part 1: Non-alloy steel tubes with specified room temperature properties EN , Welded steel tubes for pressure purposes Technical delivery conditions Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN , Welded steel tubes for pressure purposes Technical delivery conditions Part 3: Alloy fine grain steel tubes EN , Welded steel tubes for pressure purposes Technical delivery conditions Part 4: Electric welded non-alloy steel tubes with specified low temperature properties EN , Welded steel tubes for pressure purposes Technical delivery conditions Part 5: Submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties EN , Welded steel tubes for pressure purposes Technical delivery conditions Part 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties EN , Non-destructive testing of steel tubes Part 10: Radiographic testing of the weld seam of automatic fusion arc welded steel tubes for the detection of imperfections EN , Non-destructive testing of steel tubes Part 11: Liquid penetrant testing of seamless and welded steel tubes for the detection of surface imperfections EN , Non-destructive testing of steel tubes Part 12: Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface imperfections EN 10266:2003, Steel tubes, fittings and structural hollow sections Symbols and definitions of terms for use in product standards EN 10273, Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties EN :2002, Metallic industrial piping Part 3: Design and calculation EN ISO 377:1997, Steel and steel products Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) 6

11 EN ISO , Steel Conversion of elongation values Part 1: Carbon and low alloy steels (ISO :1984). EN ISO , Codes for the representation of names of countries and their subdivisions Part 1: Country codes (ISO :2006) EN ISO 6708, Pipe work components Definition and selection of DN (nominal size) (ISO 6708:1995) EN ISO 14284, Steel and iron Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) EN ISO , Specification and qualification of welding procedures for metallic materials - Welding procedure test Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO :2004) ISO 1027, Radiographic image quality indicators for non-destructive testing Principles and identification 3 Terms and definitions For the purposes of this document, the relevant definitions in EN 10020:2000, EN 10021:2006, EN 10052:1993 and EN ISO 377:1997 apply, except as defined below. 3.1 carbon steel grade in this part of EN 10253, the following grades : P235TR2 - P265TR2 - P235GH - P265GH - P355N - P355NH - P355NL1 - P215NL - P265NL 3.2 employer organisation for which a person works on a regular basis NOTE The employer may be either the fitting manufacturer or supplier or a third party organisation providing a service, e.g. NDT. 3.3 model for elbows and return bends, the model defines the bending radius of the piece 3.4 purchaser person or organisation that orders products in accordance with this European Standard NOTE 1 The purchaser is not necessarily, but may be, a manufacturer of pressure equipment in accordance with the EU Directive listed in Annex ZA. NOTE 2 Where a purchaser has responsibilities under this EU Directive, this standard will provide a presumption of conformity with the essential requirements of the Directive so identified in Annex ZA. 3.5 weld during manufacture weld made for obtaining a fitting NOTE This term does not include the tube welds when a tube is used as starting material. 7

12 3.6 seamless fitting fitting manufactured without welding from starting material which is not welded 3.7 welded fitting fitting made from welded tubes fitting made from sheet/plate or strip where welding is a part of the manufacturing process 8

13 4 Symbols For the purposes of this document, the symbols defined in EN 10266:2003 and the following apply: DN, DN 1 Conventional dimension used in piping ; non measurable value (See EN ISO 6708) ; D Specified outside diameter for elbows, return ends, equal tees, caps and the major outside diameter for reducers and reducing tees, expressed in millimetres ; D 1 Specified minor outside diameter for reducers and reducing tees, expressed in millimetres ; T T 1 ID Specified wall thickness at the welding ends for elbows, return bends, equal tees and bends or on the D end for reducers and reducing tees, expressed in millimetres ; Specified wall thickness on the D 1 welding end of reducers and reducing tees, expressed in millimetres ; Internal diameter at the welding ends of elbows, return bends, equal tees and at the major welding end of reducers and reducing tees (ID = D -2T) ; ID 1 Internal diameter at the minor welding end of reducers and reducing tees (ID 1 = D 1 2T 1 ) ; C Centre to centre distance for return bends (C 2R), expressed in millimetres ; B Back to face distance for return bends, expressed in millimetres ; F Distance from the axis of the branch outlet to the face of the centre body of tees, expressed in millimetres ; G Distance from the axis of the centre line to the face of the branch outlet of reducing tees, expressed in millimetres ; k Total height for caps, expressed in millimetres ; L Face to face distance for reducers, expressed in millimetres ; X Tolerance on the form of fittings ; r Inside knuckle radius of cap ; R Bending radius of elbows and return bends, expressed in millimetres ; R1 Inside spherical radius of cap ; P Tolerance on the form of elbows ; W Distance from the extrados to the centre of a 90 elbow at the welding ends ; 9

14 Z Distance from the extrados to the centre of a 45 elbow at the welding ends ; R m Tensile strength at room temperature, expressed in megapascals ; R p0,2 Minimum 0,2 % proof strength at room temperature, expressed in megapascals ; A Percentage of elongation at rupture, with reference to gauge length of 5,65 S o. 5 Designations 5.1 Designation of steel grades For fittings covered by this European Standard the designation shall consist of : number of this European Standard (EN ) ; plus either : steel name in accordance with EN ; or steel number allocated in accordance with EN Designation of fittings Elbows and return bends are designated by the model (2D, 3D or 5D), the angle, the outside diameter D. Reducers are designated by the model (concentric or eccentric), the major diameter D, the minor diameter D 1. Equal tees are designated by the outside diameter D. Reducing tees are designated by the major diameter D, the minor diameter D 1. Caps are designated by the outside diameter D. 6 Information to be supplied by the purchaser 6.1 Mandatory information The following information shall be supplied by the purchaser at the time of enquiry and order: a) quantity required (number of pieces) ; b) reference to this European Standard ; c) type of fitting, A or B ; d) designation of fittings (see 5.2) and the wall thickness T(T 1 ) ; e) designation of the steel grade (see 5.1) ; 10

15 6.2 Options A number of options are specified in this European Standard and these are listed below. In the event that the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the fittings shall be supplied in accordance with the basic specification (see 6.1). 1) Steelmaking process (see 8.1) ; 2) method of manufacture of the fitting (see 8.2) ; 3) starting product form and /or delivery condition (see 8.2.1) ; 4) information about the product-making process (see 8.2.1) ; 5) type of heat treatment (see 8.2.3) ; 6) other grades as specified on the purchase order (see 9.2.1) ; 7) product analysis (see 9.2.2) ; 8) verification of the proof strength at elevated temperature (see 9.3) ; 9) tolerance to be applied to the outside diameter (see ) ; 10) special ID tolerances for pigging (see ) ; 11) plus tolerances on the body of the fitting (see ) ; 12) end finishing (see 11.3) ; 13) inspection document 3.2 (see ) ; 14) mechanical properties determined on the finished product (see 9.2) ; 15) hardness testing of each fitting (see Table 20) ; 16) impact testing for grades listed in footnote e of Table 20 (see Table 20) ; 17) registration records of the heat treatment temperatures (see ) ; 18) size of the test unit per Table 21 (see ) ; 19) size of the test unit per Table 22 (see ) ; 20) special test unit size (see ) ; 21) impact test of the heat affected zone (see ) ; 22) NDT of welds after forming (see ) ; 23) NDT of welds mandatory after forming (see ) ; 11

16 Bestelformulier Stuur naar: NEN Standards Products & Services t.a.v. afdeling Klantenservice Antwoordnummer WB Delft NEN Standards Products & Services Postbus GB Delft Vlinderweg AX Delft Ja, ik bestel ex. NEN-EN :2007 en Pijpfittings voor lassen - Deel 2: Ongelegeerd staal en staalsoorten van ferritische legeringen met bijzondere beproevingseisen T (015) F (015) Wilt u deze norm in PDF-formaat? Deze bestelt u eenvoudig via Gratis nieuwsbrieven Wilt u op de hoogte blijven van de laatste ontwikkelingen op het gebied van normen, normalisatie en regelgeving? Neem dan een gratis abonnement op een van onze nieuwsbrieven. Gegevens Bedrijf / Instelling T.a.v. O M O V Klantnummer NEN Uw ordernummer BTW nummer Postbus / Adres Postcode Plaats Telefoon Fax Factuuradres (indien dit afwijkt van bovenstaand adres) Postbus / Adres Postcode Plaats Datum Handtekening Retourneren Fax: klantenservice@nen.nl Post: NEN Standards Products & Services, t.a.v. afdeling Klantenservice Antwoordnummer 10214, 2600 WB Delft (geen postzegel nodig). Voorwaarden De prijzen zijn geldig tot 31 december 2018, tenzij anders aangegeven. Alle prijzen zijn excl. btw, verzend- en handelingskosten en onder voorbehoud bij o.m. ISO- en IEC-normen. Bestelt u via de normshop een pdf, dan betaalt u geen handeling en verzendkosten. Meer informatie: telefoon , dagelijks van 8.30 tot uur. Wijzigingen en typefouten in teksten en prijsinformatie voorbehouden. U kunt onze algemene voorwaarden terugvinden op: LEREN, WERKEN EN GROEIEN MET NEN preview